Question

If an array has two elements what is the index of the last element in the array?

0
1
2
3

How do I find this for future reference?

Answer 1

Does indexing start with 0 or 1?

Answer 2

uhmm...

Answer 3

0?

Answer 4

if the first element is indexed 0, then the next element will be indexed with ...

Answer 5

1?

Answer 6

So if the array has only two elements, what is the index of the last element in the array?

Answer 7

2?

Answer 8

how did you get that?

Answer 9

well if 0 is the first indexed element and 1 is the second. then 2 must be the 3rd right?

Answer 10

there are only two elements in the array

Answer 11

oh okay so 1?

Answer 12

yes
\[A =\begin{pmatrix}a_0\\a_1 \end{pmatrix}\]

Answer 13

:) thank you. Would you mind helping me with a few more?

Answer 14

ok

Answer 15

NB: some programming languages / syntax :
index starting with 0, whereas others start indexing with 1